Both solvent and the feed gas are normally refrigerated, to improve absorption potential of the solvent. Selexol solvent was chilled down to 4 degC and feed gas chilled to 10 degC. Operating pressure of the Absorber was 33 bar-g, and operating temperature of the Selexol reboiler/regenerator was 151 degC @ 1.5 bar-g.
Differential pressure across the Selexol absorber depends on the number of stages (= number of trays or height of packing) required to achieve product gas specification. and design/actual gas and liquid loadings in the column. Selexol towers are known as quite tall towers, but you will rarely see deltaP across the tower exceeding 0.2 - 0.3 bar under normal circumstances.
2,000mm diameter Selexol absorber handling flow of 1,185 kgmole/hr of solvent with average Mol Weight of 175 (mixture of Selexol and water).
Both solvent and the feed gas are normally refrigerated, to improve absorption potential of the solvent.
Selexol solvent was chilled down to 4 degC and feed gas chilled to 10 degC.
Operating pressure of the Absorber was 33 bar-g, and operating temperature of the Selexol reboiler/regenerator was 151 degC @ 1.5 bar-g.
Differential pressure across the Selexol absorber depends on the number of stages (= number of trays or height of packing) required to achieve product gas specification.
and design/actual gas and liquid loadings in the column.
Selexol towers are known as quite tall towers, but you will rarely see deltaP across the tower exceeding 0.2 - 0.3 bar under normal circumstances.
2,000mm diameter Selexol absorber handling flow of 1,185 kgmole/hr of solvent with average Mol Weight of 175 (mixture of Selexol and water).